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Ranathunga K, Yapa P, Munaweera I, Weerasekera MM, Sandaruwan C. Preparation and characterization of Fe-ZnO cellulose-based nanofiber mats with self-sterilizing photocatalytic activity to enhance antibacterial applications under visible light. RSC Adv 2024; 14:18536-18552. [PMID: 38860242 PMCID: PMC11163953 DOI: 10.1039/d4ra03136a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2024] [Accepted: 06/04/2024] [Indexed: 06/12/2024] Open
Abstract
Bacterial infections and antibiotic resistance have posed a severe threat to public health in recent years. One emerging and promising approach to this issue is the photocatalytic sterilization of nanohybrids. By utilizing ZnO photocatalytic sterilization, the drawbacks of conventional antibacterial treatments can be efficiently addressed. This study examines the enhanced photocatalytic sterilizing effectiveness of Fe-doped ZnO nanoparticles (Fe-ZnO nanohybrids) incorporated into polymer membranes that are active in visible light. Using the co-precipitation procedure, Fe-ZnO nanohybrids (Fe x Zn100-x O) have been generated using a range of dopant ratios (x = 0, 3, 5, 7, and 10) and characterized. The ability to scavenge free radicals was assessed and the IC50 value was calculated using the DPPH test at different catalytic concentrations. PXRD patterns showed a hexagonal wurtzite structure, which indicated that the particle size of the nanohybrid decreased as the dopant concentration rose. It was demonstrated by UV-vis diffuse reflectance experiments that the band gap of the nanohybrid decreased (redshifted) with Fe doping. The photocatalytic activity under sunlight increased steadily to 87% after Fe was added as a dopant. The Fe 5%-ZnO nanohybrid exhibited the lowest IC50 value of 81.44 μg mL-1 compared to ZnO, indicating the highest radical scavenging activity and the best antimicrobial activity. The Fe 5%-ZnO nanohybrid, which is proven to have the best photocatalytic sterilization activity, was then incorporated into a cellulose acetate polymer membrane by electrospinning. Disc diffusion assay confirmed the highest antimicrobial activity of the Fe 5%-ZnO nanohybrid incorporated electrospun membrane against Staphylococcus aureus (ATCC 25923), Streptococcus pneumoniae (ATCC 49619), Escherichia coli (ATCC 25922), Pseudomonas aeruginosa (ATCC 27853), and Candida albicans (ATCC 10231) under visible light. As a result, Fe 5%-ZnO nanofiber membranes have the potential to be employed as self-sterilizing materials in healthcare settings.
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Affiliation(s)
- Kithmini Ranathunga
- Department of Chemistry, Faculty of Applied Sciences, University of Sri Jayewardenepura Nugegoda Sri Lanka
| | - Piumika Yapa
- Department of Chemistry, Faculty of Applied Sciences, University of Sri Jayewardenepura Nugegoda Sri Lanka
| | - Imalka Munaweera
- Department of Chemistry, Faculty of Applied Sciences, University of Sri Jayewardenepura Nugegoda Sri Lanka
| | - M M Weerasekera
- Department of Microbiology, Faculty of Medical Sciences, University of Sri Jayewardenepura Nugegoda Sri Lanka
| | - Chanaka Sandaruwan
- Sri Lanka Institute of Nanotechnology (SLINTEC) Homagama Sri Lanka
- Department of Aerospace Engineering, Khalifa University of Science and Technology 127788 Abu Dhabi United Arab Emirates
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Taheri M. Advances in Nanohybrid Membranes for Dye Reduction: A Comprehensive Review. GLOBAL CHALLENGES (HOBOKEN, NJ) 2024; 8:2300052. [PMID: 38223886 PMCID: PMC10784202 DOI: 10.1002/gch2.202300052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 09/18/2023] [Indexed: 01/16/2024]
Abstract
Separating valuable materials such as dyes from wastewater using membranes and returning them to the production line is a desirable environmental and economical procedure. However, sometimes, besides filtration, adsorption, and separation processes, pollutant destruction also can be suitable using photocatalytic membranes. The art of producing nanohybrid materials in contrast with nanocomposites encompasses nanomaterial synthesis as a new product with different properties from raw materials for nanohybrids versus the composition of nanomaterials for nanocomposites. According to the findings of this research, confirming proper synthesis of nanohybrid is one challenge that can be overcome by different analyses, other researchers' reports, and the theoretical assessment of physical or chemical reactions. The application of organic-inorganic nanomaterials and frameworks is another challenge that is discussed in the present work. According to the findings, Nanohybrid Membranes (NHMs) can achieve 100% decolorization, but cannot eliminate salts and dyes, although the removal efficiency is notable for some salts, especially divalent salts. Hydrophilicity, antifouling properties, flux, pressure, costs, usage frequency, and mechanical, chemical, and thermal stabilities of NHMs should be considered.
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Affiliation(s)
- Mahsa Taheri
- Civil and Environmental Engineering DepartmentAmirkabir University of Technology (AUT)Hafez Ave.Tehran15875‐4413Iran
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Hami SSBM, Affandi NDN, Indrie L, Tripa S, Harun AM, Ahmad MR. Enhancing Mechanical Properties and Flux of Nanofibre Membranes for Water Filtration. Polymers (Basel) 2023; 15:3281. [PMID: 37571175 PMCID: PMC10422239 DOI: 10.3390/polym15153281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 07/31/2023] [Accepted: 07/31/2023] [Indexed: 08/13/2023] Open
Abstract
Nanofibres have gained attention for their highly porous structure, narrow pore size, and high specific surface area. One of the most efficient techniques for producing nanofibres is electrospinning. These fibres are used in various fields, including water filtration. Although they possess the ability to filter various components, the fibres generally have low mechanical strength, which can mitigate their performance over time. To address this, studies have focused on enhancing nanofibre membrane strength for water filtration. Previous analyses show that the mechanical properties of nanofibre mats can be improved through solvent vapour treatment, thermal treatment, and chemical crosslinking. These treatments promote interfibre bonding, leading to the improvement of mechanical strength. However, excessive treatment alters nanofibre behaviour. Excessive heat exposure reduces interfibre bonding, while too much solvent vapour decreases pore size and mechanical strength. Thus, a comprehensive understanding of these post-treatments is crucial. This review examines post-treatments aiming to increase the mechanical strength of nanofibre mats, discussing their advantages and disadvantages. Understanding these treatments is essential for optimising nanofibre membrane performance in water filtration and other applications.
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Affiliation(s)
- Siddratul Sarah Binti Mohd Hami
- Textile Research Group, Faculty of Applied Sciences, Universiti Teknologi MARA, Shah Alam 40450, Selangor, Malaysia; (S.S.B.M.H.); (M.R.A.)
| | - Nor Dalila Nor Affandi
- Textile Research Group, Faculty of Applied Sciences, Universiti Teknologi MARA, Shah Alam 40450, Selangor, Malaysia; (S.S.B.M.H.); (M.R.A.)
| | - Liliana Indrie
- Department of Textiles, Leather and Industrial Management, Faculty of Energy Engineering and Industrial Management, University of Oradea, Universitatii Str. No. 1, 410087 Oradea, Romania;
| | - Simona Tripa
- Department of Textiles, Leather and Industrial Management, Faculty of Energy Engineering and Industrial Management, University of Oradea, Universitatii Str. No. 1, 410087 Oradea, Romania;
| | - Ahmad Mukifza Harun
- Nano Lab, Faculty Engineering, University Malaysia Sabah, Kota Kinabalu 88400, Sabah, Malaysia;
| | - Mohd Rozi Ahmad
- Textile Research Group, Faculty of Applied Sciences, Universiti Teknologi MARA, Shah Alam 40450, Selangor, Malaysia; (S.S.B.M.H.); (M.R.A.)
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Yao L, Sun C, Lin H, Li G, Lian Z, Song R, Zhuang S, Zhang D. Enhancement of AFB 1 Removal Efficiency via Adsorption/Photocatalysis Synergy Using Surface-Modified Electrospun PCL-g-C 3N 4/CQDs Membranes. Biomolecules 2023; 13:biom13030550. [PMID: 36979485 PMCID: PMC10046413 DOI: 10.3390/biom13030550] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2023] [Revised: 02/18/2023] [Accepted: 03/07/2023] [Indexed: 03/29/2023] Open
Abstract
Aflatoxin B1 (AFB1) is a highly toxic mycotoxin produced by aspergillus species under specific conditions as secondary metabolites. In this study, types of PCL (Polycaprolactone) membranes anchored (or not) to g-C3N4/CQDs composites were prepared using electrospinning technology with (or without) the following surface modification treatment to remove AFB1. These membranes and g-C3N4/CQDs composites were characterized by SEM, TEM, UV-vis, XRD, XPS and FTIR to analyze their physical and chemical properties. Among them, the modified PCL-g-C3N4/CQDs electrospun membranes exhibited an excellent ability to degrade AFB1 via synergistic effects of adsorption and photocatalysis, and the degradation rate of 0.5 μg/mL AFB1 solution was observed to be up to 96.88% in 30 min under visible light irradiation. Moreover, the modified PCL-g-C3N4/CQDs electrospun membranes could be removed directly after the reaction process without centrifugal or magnetic separation, and the regeneration was a green approach synchronized with the reaction under visible light avoiding physical or chemical treatment. The mechanism of adsorption by electrostatic attraction and hydrogen bonding interaction was revealed and the mechanism of photodegradation of AFB1 was also proposed based on active species trapping experiments. This study illuminated the highly synergic adsorption and photocatalytic AFB1 removal efficiency without side effects from the modified PCL-g-C3N4/CQDs electrospun membranes, thereby offering a continual and green solution to AFB1 removal in practical application.
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Affiliation(s)
- Liangtao Yao
- Engineering Research Center of Optical Instrument and System, Ministry of Education and Shanghai Key Lab of Modern Optical System, University of Shanghai for Science and Technology, No.516 Jungong Road, Shanghai 200093, China
| | - Changpo Sun
- Standards and Quality Center of National Food and Strategic Reserves Administration, No.25 Yuetan North Street, Xicheng District, Beijing 100834, China
| | - Hui Lin
- Engineering Research Center of Optical Instrument and System, Ministry of Education and Shanghai Key Lab of Modern Optical System, University of Shanghai for Science and Technology, No.516 Jungong Road, Shanghai 200093, China
| | - Guisheng Li
- Department of Chemistry, College of Science, University of Shanghai for Science and Technology, No.516 Jungong Road, Shanghai 200093, China
| | - Zichao Lian
- Department of Chemistry, College of Science, University of Shanghai for Science and Technology, No.516 Jungong Road, Shanghai 200093, China
| | - Ruixin Song
- Engineering Research Center of Optical Instrument and System, Ministry of Education and Shanghai Key Lab of Modern Optical System, University of Shanghai for Science and Technology, No.516 Jungong Road, Shanghai 200093, China
| | - Songlin Zhuang
- Engineering Research Center of Optical Instrument and System, Ministry of Education and Shanghai Key Lab of Modern Optical System, University of Shanghai for Science and Technology, No.516 Jungong Road, Shanghai 200093, China
| | - Dawei Zhang
- Engineering Research Center of Optical Instrument and System, Ministry of Education and Shanghai Key Lab of Modern Optical System, University of Shanghai for Science and Technology, No.516 Jungong Road, Shanghai 200093, China
- Fujian Provincial Key Laboratory for Advanced Micro-Nano Photonics Technology and Devices, Research Center for Photonics Technology, Quanzhou Normal University, Quanzhou 362000, China
- Correspondence:
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Nur'aini S, Zulfi A, Arrosyid BH, Rafryanto AF, Noviyanto A, Hapidin DA, Feriyanto D, Saputro KE, Khairurrijal K, Rochman NT. Waste acrylonitrile butadiene styrene (ABS) incorporated with polyvinylpyrrolidone (PVP) for potential water filtration membrane. RSC Adv 2022; 12:33751-33760. [PMID: 36505690 PMCID: PMC9685737 DOI: 10.1039/d2ra05969j] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Accepted: 11/18/2022] [Indexed: 11/25/2022] Open
Abstract
Acrylonitrile butadiene styrene (ABS) is one of the most common fused-filament feedstocks for 3D printing. The rapid growth of the 3D printing industry has resulted in huge demand for ABS filaments; however, it generates a large amount of waste. This study developed a novel method using waste ABS to fabricate electrospun nanofiber membranes (ENMs) for water filtration. Polyvinylpyrrolidone (PVP) was employed to modify the properties of waste ABS, and the effect of PVP addition in the range of 0-5 wt% was investigated. The results showed that adding PVP increased the viscosity and surface tension but decreased the conductivity of the precursor solution. After electrospinning, PVP could reduce the number of beads, increase the porosity and fiber diameter, and improve the wettability of the fabricated fibers. Moreover, the bilayer of ABS ENMs achieved a high flux value between 2951 and 48 041 L m-2 h-1 and a high rejection rate of 99%. Our study demonstrates a sustainable strategy to convert waste plastics to inexpensive materials for wastewater treatment membranes.
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Affiliation(s)
- Syarifa Nur'aini
- Nano Center Indonesia, Jalan Raya PUSPIPTEKSouth TangerangBanten 15314Indonesia
| | - Akmal Zulfi
- Research Center for Environmental and Clean Technology, National Research and Innovation Agency, Bandung Advanced Science and Creative Engineering Space (BASICS)Jl. CisituBandung 40135Indonesia
| | - Bagas Haqi Arrosyid
- Nano Center Indonesia, Jalan Raya PUSPIPTEKSouth TangerangBanten 15314Indonesia
| | | | - Alfian Noviyanto
- Nano Center Indonesia, Jalan Raya PUSPIPTEKSouth TangerangBanten 15314Indonesia,Department of Mechanical Engineering, Mercu Buana UniversityJl. Meruya Selatan, Kebun JerukJakarta 11650Indonesia
| | - Dian Ahmad Hapidin
- Department of Physics, Institut Teknologi BandungJalan Ganesa 10Bandung 40132Indonesia
| | - Dafit Feriyanto
- Department of Mechanical Engineering, Mercu Buana UniversityJl. Meruya Selatan, Kebun JerukJakarta 11650Indonesia
| | | | | | - Nurul Taufiqu Rochman
- Research Center for Metallurgy and Materials, National Research and Innovation AgencySouth TangerangBanten 15314Indonesia
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